Head lice are tiny insects that live on a person's head. You might not even notice you have them. Sometimes they can cause your scalp to itch. Most people who get head lice use some form of simple treatment to get rid of them. Clear concise information in this book looks at the condition and explains what head lice are. The book also describes how head lice can be passed from one person to another and gives tips on how to treat the condition quickly and effectively.